NO. 2063. NORTH AMERICAN PARASITIC C0PEP0D8— WILSON. 723 



Plate 39. 



Female of Achtheres percarum and males of Lernaeopoda elongata and Lernaeopodina 



relata. 



Fig. 96, side view, A. percarum. Fig. 97, dorsal view of head. Fig. 98, side view, 

 young male, L. elongata. Fig. 99, side view, L. relata. Fig. 100, second maxilla. 

 Fig. 101, maxilliped. 



Plate 40. 



Male and female of Lernaeopodina relata and female of Tracheliastes grandis. 



Fig. 102, side view of mouth parts and antennae, L. relata, male. Fig. 103, side view 

 of female. Fig. 104, ventral view of antennae and mouth parts. Fig. 105, maxil- 

 liped. Fig. 106, ventral view, T. grandis. Fig. 107, side view of antennae and 

 mouth tube. Fig. 108, maxilliped 



Plate 41. 



Females of Brianella corniger, and Charopinus bicaxtdatus. 



Fig. 109, side view, B. corniger. Fig. 110, front view of head; an^ and an^ first 

 and second antennae. Fig. Ill, side view of same, flattened under pressure. Fig. 

 112, side view, natural condition; lb, labium. Fig. 113, maxillipeds. Fig. 114, dorsal 

 view of head of C. bicaudatus. Fig. 115, first antennae. Fig. 116; mandible. Fig. 

 117, first maxilla. Fig. 118, maxilliped. 



Plate 42. 



Females of Charopinus bicaudatus and Naobranchia lizae. 



Fig. 119, side view, C. bicaudatus. Fig. ] 20, ventral view of antennae and mouth- 

 parts; an^ and an^, first and second antennae; mx\ first maxilla. Fig. 121, median 

 section of N. lizae; a, anus; i, intestine; mx^, second maxillae; n, thickened car- 

 tilage around the muscle strands; oe, esophagus; s, stomach sr, semen receptacle; 

 X, y, and z, points at which the enlarged figures 123, 126, and 133 were taken; *, 

 point corresponding to the one in the shoulders where the maxillary glands are sit- 

 uated. Fig. 122, median section of head, enlarged ; /a, frontal gland; ig, and sg, infra 

 and supra-esophageal ganglia; m, mouth; oe, esophagus; p, posterior nerve; s, stomach. 

 Fig. 123, section x of fig. 121, enlarged; gc, gland cells of stomach; s, skin; set, subcu- 

 taneous tissue. Fig. 124, section of second maxillae; m, muscle bands; o, open 

 spaces connecting the muscle bands; s, skin. 



Plate 43. 



Female of Naobranchia lizae. 



Fig. 125, maxillary gland. Fig. 126, section z of fig. 121, enlarged. Fig. 127, side 

 view of adult. Fig. 128, side view of young, showing maxillae freed at their tips. 

 Fig. 129, side view of head, showing the peculiar lateral appendages. Fig. 130, sec- 

 ond antennae. Fig. 131, ventral view of fused trunk and abdomen. Fig. 132, dorsal 

 view. 



Plate 44. 



Female and male of Naobranchia occidentalis. 



Fig. 133, section y of fig. 121, enlarged. Fig. 134, section of egg, showing blastoderm 

 disk and large central vacuoles. Fig. 135, ventral view of antennae and mouth parts 

 of N. lizae. Fig. 136, dorsal view, N. occidentalis. Fig. 137, ventral view of antennae 

 and mouth parts. Fig. 138, ventral view of head, showing peculiar lateral append- 

 ages. Fig. 139, side view of male. 



