WALKINGSTICKS OF THE UNITED STATES— CAUDELL. 881 



Tlie following description of this common Southern walkingstick 

 i-i made from a series of both sexes in the collection of the United 

 ,)tates National Museum. 



I Color varj'ing shades of yellowish brown, often almost fuscous, 

 yith conspicuous broad, ])lack stripes extending from the front of the 

 Head to the tip of the abdomen, one dorsal and one on each side. 

 Chese stripes, in dark-colored individuals, are often more or less con- 

 used, but in light-colored specimens they are ver}^ conspicuous and 

 yell defined. Some specimens, apparently killed soon after trans- 

 ormation, are paler in color and with the stripes narrow and indis- 

 inct. Legs short and stout, unequal, the middle pair the shortest, in 

 nale more slender than in the female, dark colored, except in light- 

 ■olored individuals, where they are colored the same as the body; the 

 I'ib'vx and femora of each pair of legs are subequal in length. Head 

 loticeably longer than broad, horizontally attached to the thorax and 

 ulxjuadrate in shape, somewhat swollen anteriorl3^ Antennae about 

 hree times as long as the anterior femora, the fourth segment the 

 ihortest. Prothorax raesially incised and transverseh^ sulcate in the 

 niddle, about twice as long as broad, usually more than one-third as 

 ong as the mesothorax, furnished above on each well-elevated border 

 n front with a prominent gland, opening laterally from Avhich is 

 'jected a pungent spray when the insect is excited. Meso- and meta- 

 :horax subequal in length, the former usually slightly the longer and 

 )n the disk sometimes furnished, especially toward the sides, with 

 several granules, often quite acute: there is no median carina. Abdo- 

 nen smooth, without carina, segments, especially the basal ones of the 

 female, subquadrate or transverse, in the male usually somewhat 

 Longer than broad, intermediary segment invisible. In the ft^xxiale the 

 seventh segment beneath forms a large scoop-shaped process, at the 

 3ase of which are situated the genital organs. Cerci short, in the 

 female no more than one-half as long as the last abdominal segment, 

 in the male almost as long as the apical segment, straight and subcylin- 

 drical in both sexes, projecting subhorizontally backward in the 

 female and subperpendicularly downward- in the male. The male 

 usually has the tip of the abdomen curved under. 



Measurements made from a mated pair from Key West, Florida, are 

 as follows: Length of body, male 45 mm., female 01 nun.; head, male 

 3.5 mm., female 6 mm.; antenna?, female 40 mm.; prothorax, male 

 3.5 mm., female 6 mm.; mesothorax, male 7 mm., female 12 mm.; 

 metathorax, male 6 nun., female 10 mm.; fore femora, male 9.5 mm., 

 female 13 mm.; middle femora, male 7 mm., female 10.5 mm.; hind 

 femora, male 9.5 mm., female U mm.; width of head, male 2.5 mm., 

 female 4 mm. 



This species, which is sometimes called the musk mare, seems to 

 occur most commonly in the extreme Southern States. The U. S. 



