90 



LEODICID^E OF THE WEST INDIAN REGION. 



is relatively very short and except for the margins lighter in color than the remainder of 

 the apparatus. The forceps has a rather heavy basal portion, the apical portion rather 

 slender. The proximal paired plates each have 3 teeth, the distal paired ones have 5 on 

 the right and 3 on the left, the unpaired has 7. There are two accessory plates on either 

 side and some have a pair of black pigment patches distal to the whole apparatus. In 

 the specimen figured, this appeared only on one side. The mandible (text-figure 323) 

 is similar to that of L. notata in its general appearance and in the possession of a promi- 

 nent black line on either half. In larger specimens it may become much calcified, from 

 a ventral view appearing much like the mandible of Leodice cariboea (see p. 48). 



Lysidice sulcata occurs in deeper water than L. notata, most of those in my collec- 

 tions having been dredged near Loggerhead Key, though several were obtained by 

 dredging at Sand Key Light, in Key West Harbor. One was collected in the rocks off 

 Guanica Harbor, Porto Rico. The Fish Hairk expedition to Porto Rico in 1898-99 col- 

 lected it on reefs off Ponce, at Mayaguez Harbor in 22 to 33 fathoms, and off St. Thomas 

 in 20 to 23 fathoms. 



Schmarda (1861, p. 121, plate 32, figure 255) describes as Lysidice brachycera a 

 species which seems to me to correspond with L. sulcata. It has the reddish-brown 

 anterior region and in general is very like this except that the mandibles are fused 

 through a greater part of their extent. The finer details are not, however, given in 

 Schmarda's figures and from them it is not possible to be certain how the animal com- 

 pared with my material. Schmarda, in his Latin diagnosis, speaks of three tentacles, 

 but later refers to them as two. This is evidently a misprint. If these should prove to 

 be identical with sulcata the name brachycera has priority. 



Schmarda's specimens were collected in coral reefs off Jamaica. 



TEXT-FIGURES 314 to 323. Lysidice sulcata Treadwell. 



314. First parapodium x34. 318. Pectinate seta x334. 321. Tip of ventral acicula x334. 



315. Tenth parapodium x34. 319. Simple seta x334. 322. Maxilla x28. 



316. Eightieth parapodium x34. 320. Tip of dorsal acicula x334. 323. Mandible x28. 



317. Compound seta x334. 



