DESCRIPTIONS OF NEW SPECIES OF MALLOPHAGA COLLECTED 

 BY C. H. MERRIAM WHILE IN THE GOVERNMENT GEOLOGICAL 

 SURVEY OF THE ROCKY MOUNTAINS, PROFESSOR F. V. HAY- 

 DEN, UNITED STATES GEOLOGIST. 



By a. S. Packard, Jr., M. D. 



Menopon 2ncwola, n. sp. (Fig. 58.) 



Body slightly more than twice as long as broad. Head lunate, being 

 much shorter than wide, well rounded in front, with a lobe on each side. 

 Antennre short and slender, terminal Fig- 58. 



joint nearly twice as long as penulti- 

 mate. Head with three long hairs 

 from posterior division, and two 

 oblique dark spots in the middle. 

 Prothorax with a median square 

 area half as wide as head, with two 

 rings on each side, making the en- 

 tire segment three-fourths as wide 

 as head. Abdomen regularly oval, 

 two-thirds as wide as long, terminal 

 segment large and broad. Segments 

 convex, with a slight ridge crossing 

 behind the middle of each segment. 

 Two or three long hairs project from 

 hind edge of each segment, and nu- 

 merous liner hairs. Legs moderately 

 long, tibi?e long, a third longer than 

 femora ; tarsi with second joint long 

 and slender, ending in two large 

 claws. Pale horn color. 



Length, ,08 inch. Ten specimens. 



Prom Picoides arcticiis and P. dor- 

 salis, (Nos. 236 and 237.) August 26, 

 1872, at Lower Geyser Basin, Wyom- 

 ing Territory. This is more closely 

 allied to ill. citrinelku, Deuuy,* than 

 any other species I am acquainted with, but differs in the shorter, 

 broader head. The form of the prothorax is very different, being 

 transversely oval instead of squarish, as in M. citrinellcc. 



MENOPON PICICOLA. 



Goniodes Merriamanvs, n. sp. (Fig 59; a, male antenure.) 



Head about as broad as long, full, convex, broad, and regularly 

 rounded iu front of insertion of antenu£e. Deeply excavated in middle, 

 receiving basal two-thirds of basal joint of antennie; on posterior edge 

 of the notch a prominence, and still posteriorly a large prominence, 

 giving a square appearance to head posteriorly, which at hinder edge 

 suddenly contracts where it is articulated to prothorax. Head about 

 two-thirds as wide as abdomen. Prothorax about half as wide as head. 

 Abdomen ovate or pear-shaped, being broadest just before the end. It 



*Mouograpbia Auoplurorum Britanuiae, London, 1842. 



