STUDIES IN NEOTROPICAL MALLOPHAGA—CARRIKER 111 
of sou and also to lend support to the supposition that they are all 
of comparatively recent origin. 
STRONGYLOCOTES SUBCONICEPS PERIJAE, new subspecies 
FIGuRE 4, g, h 
Types.—Male and female, adults, from Crypturellus souc (mustel- 
inus(?)), collected by the author of Tierra Nueva, Sierra Perija, 
Colombia, July 8, 1941; in the U. S. National Museum. 
Diagnosis.—An immature male of perijae has the genitalia fully 
developed but not fully chitinized, nor are the bodily markings clearly 
outlined. The median projection on the clypeal band is entirely 
absent, yet the metathoracic apron is adready outlined. This young 
male is still smaller than the single adult male taken. 
The three females are almost identical in size and vary but little 
in this respect from typical subconiceps. In subconiceps the females 
are much smaller than the males (a very unusual situation), while 
in perijae the sexes are very closely matched in size, some measure- 
ments being greater in the male, others in the female. In perzjae 
the frons is wider and more convex; the last segments of the abdomen 
in the male differ considerably in shape, as well as in chaetotaxy 
(see figure). ‘There seems to be no difference in the shape of the 
apical segments in the female, but the ventral fringe of setae are much 
finer and shorter in perzjae (see fig.). 
MEASUREMENTS OF STRONGYLOCOTES SUBCONICEPS 
subconiceps perijae 
Structure Male Female Male Female 
Length} Width | Length] Width } Length) Width | Length} Width 
EBX BG BI TN eT ie Uap ah A a Pad a ia [IN QS 2s (bys wanes SNOOY ese ane 2. 69 
FUCA Seki ahs Nol SNe had, | 0! 86) (Sean e OF76" nee 05748 | baron 0. 75 
Base of trabeculae_.-_..---------].------- OF 26 ii eL ae On24n loo soy2es OS26%) jesse ae 0. 25 
PROM PlOS seer UN TAN ace SL OS7ONm| eae ON/Gh| Bee eae O59 i |Seo se 0. 57 
Brothoraxn ed ay EO 0. 46 0. 64 0. 40 0. 47 0. 39 0. 50 0. 38 0. 49 
Weber othoraxe: sees c es es ko eld 0. 60 0. 83 0. 48 0. 60 0. 48 0. 67 0. 50 0. 68 
Metathoracic apron__..----..------- 0. 30 0. 54 0. 28 0. 43 0.25 | 0.45 0. 28 0. 46 
Abdomen fk A Vee Oe es 1. 83 1.10 1.50 1,11 1.38 | 0.92 1. 50 1. 06 
PATITENNAG tee Sia ie Mle Ou 0. 43 0. 073 0.40) |oc-ss-2- 0.39 | 0.053 0. 37 0. 045 
AAR AITIOLS Rees eee en eC EM N NE I 0. 13 QuOT Sw [may tenatan Rea TEE o OM1STMONOS Tien eens 
Endomeral plate___-...._-.-._--._-- ON OS7 MON OFS tA Stee R EOL LRT Ea sd We AL MP SP EN 
STRONGYLOCOTES SPINOSUS (Piaget) 
Goniodes spinosus P1acEt, Les Pédiculines, p. 261, pl. 21, fig. 7, 1880. (Host: 
Nothocercus [Tinamus] julius.) 
Strongylocotes spinosus (Piaget) TASCHENBERG, Die Mallophagen, p. 57, 1882. 
- Under the discussion of this species published by the author in 1936 
(“Lice of the Tinamous,” p. 88) it was stated that two females taken 
