CHAMBERLIN: CHILOPODS FROM MEXICO AND WEST INDIES. 9303 
Mandible with several pectinate lamellae. 
First maxillae with lappets present, these more or less dorsal in 
position. Palpus biarticulate, the second article long. Inner branch 
set off by asuture. Coxae fused at middle. Claw of palpus of second 
maxillae simple, concave. Coxae fused at middle, the median portion 
bulging ventrad and broadly triangularly extended caudad. Salivary 
pore opening toward proximal end of coxal plate, the pore breaking 
through the mesal border. 
Prehensors not large but considerably exposed from above. Claws, 
when closed, not surpassing front margin of head. 
Prosternum with chitinous lines absent or vague. Anteriorly 
widely emarginate; unarmed. Basal plate very wide; short. 
Dorsal plates with distinct paired submedian sulci. 
Prescutellum large, distinctly separated from the spiraculiferous 
plate. In the anterior segments these sclerites touch the tergite, 
there being no suprascutella. Farther caudad first one and then more 
indistinctly two series of suprascutella appear between the two 
sclerites mentioned and the tergites. 
Ventral pores occurring over most of plate excepting a median 
transverse area. . 
Last ventral plate wide. 
Coxopleurae without pores. 
Anal legs each consisting of five articles distad of the coxopleura; 
clawless. 
GENOTYPE.— 7’. maximus, sp. nov. 
Closely related to Notiphilides with which it agrees in having the 
anal legs only five jointed. From this genus it is most readily distin- 
guishable through the presence of the paired submedian sulci and the 
absence of all suprascutella from a considerable number of the most 
anterior segments. 
TITANOPHILUS MAXIMUS, Sp. nov. 
Dorsum anteriorly yellow of dilute ochraceous cast; in median 
region darker, testaceous, of dull clivaceous tinge; again lighter, 
yellowish, at caudal end. Head light testaceous. Antennae and 
legs yellow. Prosternum and prehensors like head. Venter anteri- 
orly and caudally clear yellow, the median region testaceous of dull 
weak olivaceous cast. 
Head with anterior margin wide, subtruncate or mesally widely 
angulate; caudal margin widely convex or somewhat arcuate; head 
depressed along caudal border each side of middle. Plate of nearly 
same width anteriorly as posteriorly, sides convexly bulging between. 
A short median longitudinal sulcus evident on caudal portion and a 
