1976] 
Carico — Spider Genus Tinus 
65 
pace has a median dark band with a submarginal, variably distinct, 
light band. The dorsum of the abdomen has a median dark band 
with a characteristic outline, notably a deep indentation on each 
side, bordered by a light band which is lightest in the indentations 
of the median band. 
The following descriptions of each species, therefore, will not 
deal with the details of those features shared by most species. Char- 
acteristics of the genitalia are the most useful for identification. No 
attempt was made to distinguish juveniles because of the lack of 
adequate material. 
Uncertain Species 
Dolomedes minor Banks, 1898, Proc. California Acad. Sci., 3rd 
series, 1(7):277, pi. 17, fig. 6. Bonnet, 1959, Bibliographia Ara- 
neorum, 2:1534. D. minoratus nomen novum, Roewer, 1954, 
Katalog der Araneae, 2(a): 133. Type localities in Mexico are: San 
Jose del Cabo, Sierra San Lazaro (Baja California del Sur); Guay- 
mas (Sonora); Tepic (Nayarit). All of Banks’ specimens were 
destroyed in the Great San Francisco Earthquake. From his de- 
scription of the abdomen and figures of the male and female geni- 
talia, it is clear that this is a Tinus. It is not certain whether it is 
T. peregrinus, as I stated earlier (1973), or T. nigrinus which also 
is probably found in the area. Only specimens from all his localities 
will help resolve the problem. If D. minor should prove to be 
synonymous with T. peregrinus, then the latter name will be in- 
validated. 
KEY TO ADULTS OF SPECIES OF TINUS 
1. Males 2 
Females 6 
2. Length of the carapace less than 4.0 mm; carina on the anterio- 
medial margin of the chelicerae Tinus minutus 
Length of the carapace more than 4.0 mm; no carina on cheli- 
cerae 3 
3. Conspicuous, curved, dorsal spur arising from the bifid tibial 
apophysis 4 
Tibial apophysis not bifid 5 
4. Three lamellae on tegulum (Fig. 12) Tinus tibialis 
Six lamellae on tegulum (Fig. 16) Tinus palictlus 
