112 CALIFORNIA ACADEMY OF SCIENCES. 



Colpocephalum spinulosum Piaget. (Plate VII, fig. 9). 



Les Pediculines, 1880, p. 563, pi. xlvii, fig. 3. 



Many specimens from eight out of fifteen individuals 

 examined of the Sanderling, Calidris arenaria (Pacific 

 Grove. California). The specimens agree in all essen- 

 tial details of outline and markings with Piaget's 

 description, showing the characteristic, finely pustu- 

 lated, dorsal surface of the male, with the single trans- 

 verse series of long pustulated hairs on each segment 

 in the male and the two series in the female. But 

 there is a marked difference in size, the species type 

 being one-fourth larger than our specimens. Piaget's 

 specimens were taken from Limosa melanura (Musuem 

 of Leyden). The American specimens should be dis- 

 tinguished by a varietal name. 



Var. minor Kellogg and Chapman. (Plate VII, fig. 

 9). In the following table of measurements the figures 

 in brackets are the dimensions given by Piaget for his 

 type specimens. Male. Body, length 1.72 mm. (2.1 

 mm.), width .5 mm. (.64 mm); head, length .31 mm. 

 (.38 mm), width .34 mm. (.5 mm). Female. Body, 

 length 2.16 mm. (2.45 mm.), width .7 mm. (.86 mm.); 

 head, length .37 mm. (.38 mm.), width .5 mm. (.5 

 mm.) From the Sanderling, Calidris arenaria (Pacific 

 Grove, California.) 



Colpocephalum timidum Kellogg. 



New Mallophaga, I, 1896, p. Uo, pi. xii, fig. 6. 



One specimen from a Black-bellied Plover, Squatarola 

 squatarola (Pacific Grove, California). Described from 

 Charadrius dominicus (Lawrence, Kansas), 



