February 1S93.] 



PSTCHE. 



403 



authors be placed in a separate genus, 

 Cerastoma ; others do not favor the divi- 

 sion of the genus on sexual grounds. 



Lacinius texanus,x\ov. sp. Length of body 

 3.6 mm., width of body 2. mm. Length of 

 femur 1, 1. mm., femur 11,3.1 mm., femur iv, 

 2.1 mm., leg 1, 6. mm. Color gray, mottled 

 with white and brown ; cephalothorax and 

 dorsum of abdomen gray, mottled with brown 

 and white spots; the vase-shaped mark barely 

 visible ; venter grayish white, a black line on 

 the sides. Cephalothorax with some scattered 

 spines and three large ones on the anterior 

 margin, the median the largest; on the sides 

 are three spines projecting between the legs. 

 Eye-tubercle near the hind margin of the 

 cephalothorax, nearly twice its diameter from 

 the anterior margin, with two rows of four 

 large spines. The posterior edge of each 

 dorsal segment of the abdomen provided with 

 a row of about ten white spines. Palpi quite 

 large, white with some brown spots. The 

 femur with about seven large and several 

 smaller white spines on the under side, the 

 end enlarged internally and covered with 

 short, stiff, black hairs. The patella is pro- 

 longed, the inner side and prolongation being 



covered with short, stiff, black hairs. The 

 tibia is enlarged at the end on the inner side 

 and covered with similar hairs; on the under 

 side are two white spines, like those on the 

 femur. The tarsus (5th joint) is about as 

 long as the two preceding, slightly curved, 

 and provided with stiff hairs and a simple 

 claw at end. Legs pale with brown bands; 

 two on the femur, on the patella, tibia and 

 metatarsus one each, and one at the base of 

 the tarsus. The legs are all short, especiallv 

 1 and in; metatarsus 1 shorter than tibia 1; 

 there are no false articulations in any of the 

 metatarsi. The coxae bear several (3-6) 

 spines, one or two on each coxa being very 

 large; several prominent spines at end of 

 femur, patella and tibia. The femora are 

 round except 11 which becomes quadrangular 

 near tip; all the tibiae are quadrangular, each 

 angle being furnished with a row of small 

 spines; the patellae are somewhat four-sided, 

 and the small spines are in rows, as also on 

 the femora. The tarsi consist of many short 

 joints. The tips of the claws of the mandibles 

 are black. The structure of the coxae and 

 sternum is similar to that of Oligolophus, 

 but the sternum is a little shorter. The lateral 

 pore is not visible from above. 

 Habitat, Eastern Texas. 



THE LARVAL STAGES OF ICHTHYURA MULTNOMA Dyar. 



BY HARRISON G. DYAR, BOSTON', MASS. 



Ichthyura multiioma Dyar. 



1892 — Dyar, Canadian entomologist, xxiv, 

 179. 



First larval stage. — Head round, shining 

 black with a few hairs ; width 0.5 mm. Body 

 somewhat flattened, with long pale and black 

 hairs rising singly from large concolorous 

 tubercles; color sordid grayish, tinged with 

 dark vinous on joints 2, 5, 7, S, 11 and 12 

 over the dorsum. Feet normal, the thoracic 

 dark, the abdominal concolorous with the 

 body. As the stage advances, the whitish 

 spaces on the back become nearly white and 



the piliferous tubercles come out black and 

 distinct, in three rows on each side. At the 

 end of this, and of each following stage, the 

 larva spins a house of thread and leaves in 

 which it molts, and in which it remains dur- 

 ing the succeeding stage, when not eating. 

 The larvae are solitary. 



Second stage.— Head as before; width 0.9 

 mm. Body flattened, with deep segmental 

 incisures ; piliferous tubercles large, concolor- 

 ous at first, but later black ; setae short, black. 

 Color blackish vinous except the dorsum of 

 joints 3. 4. 6, 9, 10 and 13 which is greenish 



